///*
// *  BIP32 library, a Java implementation of BIP32
// *  Copyright (C) 2017 Alan Evans, NovaCrypto
// *
// *  This program is free software: you can redistribute it and/or modify
// *  it under the terms of the GNU General Public License as published by
// *  the Free Software Foundation, either version 3 of the License, or
// *  (at your option) any later version.
// *
// *  This program is distributed in the hope that it will be useful,
// *  but WITHOUT ANY WARRANTY; without even the implied warranty of
// *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// *  GNU General Public License for more details.
// *
// *  You should have received a copy of the GNU General Public License
// *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
// *
// *  Original source: https://github.com/NovaCrypto/BIP32
// *  You can contact the authors via github issues.
// */
//
//package com.github.ontio.crypto.bip32;
//
//import org.spongycastle.asn1.x9.X9ECParameters;
//import org.spongycastle.crypto.ec.CustomNamedCurves;
//import org.spongycastle.math.ec.ECPoint;
//
//import java.math.BigInteger;
//
//final class Secp256r1SC {
//
//    static final X9ECParameters CURVE = CustomNamedCurves.getByName("secp256r1");
//
//    static BigInteger n() {
//        return CURVE.getN();
//    }
//
//    static byte[] pointSerP(final ECPoint point) {
//        return point.getEncoded(true);
//    }
//
//    static byte[] pointSerP_gMultiply(final BigInteger p) {
//        return pointSerP(gMultiply(p));
//    }
//
//    static ECPoint gMultiplyAndAddPoint(final BigInteger p, final byte[] toAdd) {
//        return gMultiply(p).add(decode(toAdd));
//    }
//
//    private static ECPoint decode(final byte[] toAdd) {
//        return CURVE.getCurve().decodePoint(toAdd);
//    }
//
//    private static ECPoint gMultiply(BigInteger p) {
//        return CURVE.getG()
//                .multiply(p);
//    }
//}